Method of allocating radio resources in multi-carrier system
A method of allocating radio resources in a multi-carrier system is disclosed, by which a signaling message can be efficiently transmitted according to necessity of a user equipment. In a user equipment of a mobile communication system transceiving data using a plurality of subcarriers, the present invention includes the steps of if the signaling message to be transmitted is generated in the user equipment, generating a preamble sequence according to a user equipment identifier to identify the user equipment, transmitting a preamble signal including the preamble sequence and the signaling message to a base station, and receiving an acknowledgement signal for the preamble signal generated according to the user equipment identifier.
1. A user equipment:
a memory having stored therein computer-executable instructions; and
a processor, communicatively coupled to the memory, configured to execute the computer-executable instructions to perform operations, comprising:
store data in a buffer;
transmit a signal of one bit-level information to a base station periodically via a physical uplink channel that is not a random access channel, while there is no traffic channel resource from the user equipment to the base station, wherein the signal is for informing presence of a request for an uplink channel resource used to communicate buffer status information to the base station;
receive a first resource allocation information for a first uplink channel from the base station after transmitting the signal; and
transmit the buffer status information to the base station through the first uplink channel using the first resource allocation information.
2. The user equipment of claim 1 , wherein the operations further comprise:
receive second resource allocation information for a second uplink channel from the base station after transmitting the buffer status information.
3. The user equipment of claim 2 , wherein the first and second resource allocation information are received using an identifier of the user equipment.
4. The user equipment of claim 1 , wherein power headroom information is transmitted to the base station along with the buffer status information.
5. The user equipment of claim 1 , wherein the signal of one bit-level information is transmitted to the base station periodically via the physical uplink channel in a dedicated manner.
6. A base station device:
a memory having stored therein computer-executable instructions; and
a processor, communicatively coupled to the memory, configured to execute the computer-executable instructions to perform operations, comprising:
receive a signal of one bit-level information from a user equipment periodically via a physical uplink channel that is not a random access channel, while there is no traffic channel resource from the user equipment to the base station device, wherein the signal is for informing presence of a request for an uplink channel resource used to communicate the buffer status information to the base station device;
transmit first resource allocation information for a first uplink channel to the user equipment after receiving the signal; and
receive the buffer status information from the user equipment through the first uplink channel using the first resource allocation information.
7. The base station device of claim 6 , wherein the operations further comprise:
transmit second resource allocation information for a second uplink channel to the user equipment after receiving the buffer status information.
8. The base station device of claim 7 , wherein the first and second resource allocation information are transmitted using an identifier of the user equipment.
9. The base station device of claim 6 , wherein power headroom information is received from the user equipment along with the buffer status information.
10. The base station device of claim 6 , wherein the signal of one bit-level information is received from the user equipment periodically via the physical uplink channel in a dedicated manner.
11. A non-transitory computer-readable medium having instructions stored thereon that, in response to execution, cause a user equipment including a processor to perform operations comprising:
store data in a buffer;
transmit a signal of one bit-level information to a base station periodically via a physical uplink channel that is not a random access channel, while there is no traffic channel resource from the user equipment to the base station, wherein the signal is for informing presence of a request for an uplink channel resource used to communicate buffer status information to the base station;
receive a first resource allocation information for a first uplink channel from the base station after transmitting the signal; and
transmit the buffer status information to the base station through the first uplink channel using the first resource allocation information.
12. The user equipment of claim 11 , wherein the operations further comprise:
receive second resource allocation information for a second uplink channel from the base station after transmitting the buffer status information.
13. The user equipment of claim 12 , wherein the first and second resource allocation information are received using an identifier of the user equipment.
14. The user equipment of claim 11 , wherein power headroom information is transmitted to the base station along with the buffer status information.
15. The user equipment of claim 11 , wherein the signal of one bit-level information is transmitted to the base station periodically via the physical uplink channel in a dedicated manner.
16. A non-transitory computer-readable medium having instructions stored thereon that, in response to execution, cause a base station device including a processor to perform operations comprising:
receive a signal of one bit-level information from a user equipment periodically via a physical uplink channel that is not a random access channel, while there is no traffic channel resource from the user equipment to the base station device, wherein the signal is for informing presence of a request for an uplink channel resource used to communicate the buffer status information to the base station device;
transmit first resource allocation information for a first uplink channel to the user equipment after receiving the signal; and
receive the buffer status information from the user equipment through the first uplink channel using the first resource allocation information.
17. The base station device of claim 16 , wherein the operations further comprise:
transmit second resource allocation information for a second uplink channel to the user equipment after receiving the buffer status information.
18. The base station device of claim 17 , wherein the first and second resource allocation information are transmitted using an identifier of the user equipment.
19. The base station device of claim 16 , wherein power headroom information is received from the user equipment along with the buffer status information.
20. The base station device of claim 16 , wherein the signal of one bit-level information is received from the user equipment periodically via the physical uplink channel in a dedicated manner.